Bakery€bahnhofsviertelMon-Fri 07:00-19:00; Sat-Sun 08:00-18:00
Zeit für Brot's Kaiserstraße counter beats every station snack in Frankfurt on price and quality, organic bread rolls from early morning until evening.
Try: Belegte Brote and a cinnamon roll
Tip: A topped bread and coffee runs cheaper than anything inside the Hauptbahnhof and tastes double the price.
Bakery€bornheimDaily 08:00-19:00; counter sales from 07:30 on weekdays
Baguette Jeanette's filled sticks are Bornheim's classic cheap lunch in Frankfurt, French bakery prices held on the long Berger Straße shopping mile.
Try: A filled baguette to take to the park
Tip: Eat it on the benches at Bornheim Mitte or carry on to the Günthersburgpark lawns ten minutes north.
Ice cream€nordendMon and Wed-Sun 10:30-21:30; closed Tue
Eis Christina's cones remain one of Frankfurt's great cheap pleasures, Nordend gelato at prices that survived the espresso inflation almost untouched.
Try: Two scoops in a cone
Tip: Cash speeds the queue; the price board by the window has barely moved in years and the portions have not shrunk either.
Eritrean€€bahnhofsviertelMon-Thu 16:00-23:00; Fri-Sat 13:00-23:00, kitchen until 22:00; closed Sun
Im Herzen Afrikas stretches a Frankfurt food budget furthest when shared, Eritrean platters that feed two for one main-course price elsewhere.
Try: Vegetarian injera platter, shared
Tip: The vegetarian platters are the value champions; count one platter per two people and add injera before adding dishes.
Modern European€€€altstadtMon-Fri 11:30-22:00; closed Sat-Sun and holidays
Medici's €29.50 business lunch is Frankfurt's white-tablecloth bargain, a Michelin Guide kitchen at weekday-menu pricing near the Römer on weekdays.
Try: Business lunch, two courses €29.50
Tip: It stretches the definition of budget upward, but per course this is the cheapest polished cooking in the Altstadt.
German€innenstadtMon-Fri 08:00-18:00; Sat 08:00-16:00; closed Sun
Edel's stand in the Kleinmarkthalle plates Frankfurt's cheapest proper Grüne Soße, eaten standing among the market crowds at lunch every weekday.
Try: Grüne Soße with eggs at the market counter
Tip: A full plate costs less than a cocktail across town; pair with a roll from Huck's stand two aisles over.